we did a performance check on production and found that an object is missing from the Layout page which causes the below error frequently.
When we check the log file we get the below error
1. SearchUpgradeGetKeywordPropertyBag keywordsPropertyBag is null
2. Cannot open file "Resources.en-US.resx" for reading.
(#3: Cannot open file "Resources.resx" for reading.)
3. While initializing navigation, found Page placeholder but object was not found at: /GLOBAL/COMPANY/ORGANISATION/OPERATIONS/DELIVERY_CAPABILITY_MANAGEMENT/PRODUCT_DATA_MANAGEMENT/PAGES/DELIVERY_DATA_PROVISIONING.ASPX.
Most of the time SearchUpgrade and Cannot open file error are followed by While Initializing navigation error.
And we receive a deadlock error in the IIS(ISAPI.dll) at the same time when we receive this error.
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